Vulnerability in Xen
CVE-2015-4164
The compat_iret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service (large loop and system hang) via a hypercall_iret call with EFLAGS.VM set.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 4.9 (Medium). Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.004 (35.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Xen — versions 3.1.3, 3.1.4, 3.2.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/75149 (vdb-entry)
- www.debian.org/security/2015/dsa-3286 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2015-09/msg00027.html (vendor-advisory)
- www.securitytracker.com/id/1032569 (vdb-entry)
- lists.opensuse.org/opensuse-security-announce/2015-07/msg00014.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html (vendor-advisory)
- support.citrix.com/article/CTX201145
- lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html (vendor-advisory)
- xenbits.xen.org/xsa/advisory-136.html (Vendor Advisory)
Frequently asked questions
- What is CVE-2015-4164?
- CVE-2015-4164 is a vulnerability in Xen, classified under CWE-399. Published 2015-06-15.
- Is CVE-2015-4164 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.